Locomotive sander



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Dec. 14

. WITNESS Pafe'mea nec. 14.1926.

l f LJNE'EE WILLIAM I-I. WHITE, vor RoANo-Xa, VIRGINIA, Ass'IeNoR 'roVerRAHANi-wIfIIten SANDER. i

CORPORATION, or RnANoKR,` vIReINImA ccRPoRATIoN or VIRGINIA.

. IloooiaoTIvn SANDER.

The invention motives", The primary relates to sanders forv loco-yobject of the invention, gene y erally stated, is to provide lcontrolmeans v there is disclosed'a sanding apparatus iny `whereby sand maybesupplied in varying quantities dependingv upon circumstances, Yas forinstance selectively to one pair of drivers or two pairs thereof.v 1

I In Patent No.4 1,409,538 granted lMarch V14th,'1922 toJ ames Frantz'and assignedto"v the same assignee as the 'present-invention 'cluding`sand traps-'located on a locomotive boiler near the' sanddomeand'operable by fluid pressure under the `control' ofv a valve locatedwithin the cab, the valve being. of 'the duplex type and havinga'control handle'niovabl'e in oneV 'direction for'supplying 'sand inadvance of thefront drivers and movable in the opposite direction forsup-- l plying sand `to the rear 'of the reardrivers as is desirablewhen backing. In Patent No.

1,521,7 99. granted to me January 6,1925 and owned by the same assigneeI havedisclosed a similar arrangement with the additional feature of theprovision of means for sand-` ing the wheels ofv a booster.v Under somecircumstances it is desirable to apply sand to the tracks in advance ofonly one air of drivers whereas underlother conditions where a greaterquantity of sand is neces-l sary it is desirable toapply sand inladvance Vof more than one pair of drivers. However, under ordinarysystems of control, there is no provision for such an alternative. feed.

It is with the `alcove facts in view that I l have designed the presentinvention which' has fora more specific object the provision votherdetails ,beingl suchthat upon' movementof the valvehandle in onedirection compressed air may be supplied tofthegsand traps for sandingtwo pairs of drivers,

f'. movement inthe other direction resulting .jin feeding compressed airto onlyv the trapsy for one set of drivers, thisselection being underready, control.. of the engineer and making it possible toeconomize onsandconsumption whenfonlyl a small quantity 1s really needed. g f J1." ff It is a :furtherv object of the invention .to provide an equivalent`arrangement l of parts in; associationv with the compressedair pipesleading to the cleaners `of Vthe sand traps with whichthe 'control`.means is used 'vso that Y blasts Vof air will besupplied' to thecleaning at the particular time as selected by the engineer, bothfeatures' of the invention acting to economizenot only in thev matteroflsand consumption but also 4in the usejoffcomf pressed air so'that the`:pressure vthereoffwill not beneedlessly reduced.

A further object of the invention is to' providejcontrol means Vof thischaracter which maybe installedinalready existingV systems with verylittle change and at Small expense. v

.To the attainment ofjthe foregoing and otherwobjects andadvantages, theinvention combination of parts to be hereinafter more lfullydescribedand claimed, andl illustrated in the accompanying drawings in which:

Figure 1 is a diagrammatic sideelevation nozzles of only those sandtraps in operation preferably consists inthe arrangement and i ofajjlocomotive equipped with-sanding 'i mechanism and control means ofthe present Invention,

' Figure 2- is an elevation of the control y valve on alarger scale,showing thepiping arrangement, u Figur-e 3 is a side elevationoffthey,Valve taken .at right angles Yto Figure 2, and

Figure 4'is a sectional View through one portion of the valve. .f l "u lf Referring to the drawings in detail, the numeral 1 designates a boilercfa locomotive' having the usual sand -dome V2' and 3 represents thecab. VThe numerals 4 andl designate sand traps` of any ordinary orpreferred Ytype'supplied'vvith sand v,bypipes 6 leading kfrornthe' dome.The outlets from these traps 4 and 5V have connected therewith pipes 7and p8., the former of whichl dischargesnat apoint in advance of theforward dr'iverandthe latter of which discharges at a pointin advanceofone 0f the intermediate drivers., ,Thesel traps are operated by'compressed air brought from a ysuitable source through a pipe 9 to theinlet 10 of the control vvalve structure designated generallyat. 11. Y

The valve structure is ofthe, duplex Jtype such as is illustrated inPatent No. 1,409,538

v*outlets and y17 from whichleadpipesflSf yand 19 respectivelyVconnected Ywith the clean,- ing' nosilesy of the traps 5V and f4,'ll-betrapt and discharge pipes leadingvthereirom are ot courseduplicated at opposite sides of the locomotive and connected with thepipes lei, 15, 1S and 19 are'pipesQO, Q1, Qfaud Q3 which connect withthe vcorresponding pipes on the other side.

As stated alcove the valve is or the duplex type and both sidesor'sections 24e thereoi1 are similar. Between the intake port and vbe-Vtweenftli'e outlets is Atermedavalveseat 25 normally 'closed by a valve26 carried by `a stein Q'Ta'n'd urged into closed position by avspring8.` The valve 'stem also Vcarries a piston 29 terminating in aplunger 8O Wliiel. projects beyond the top 'of the valve. Each sectionhas Ya 1oo'reil therein extending from the valve seat 25,to Ipoi'nt neartlie upper end andleadingiinto or communicatin!l with a'eliamber 32located opposite anu in communication p with tlie'outlet to 'tliecleaner pipes` .Suitalel'y 'fpivotedr 'on vthe valve, 'snor-Jn atBS., isliandleB/l Apreferl ably equippedA 'with a latch device *35 andhaving.laterally Yenteriding` arms 36 which engage 'tlie,uplungers 80,*lie construction be` ing1 such 'that when the handle is swvungin onedirection or the other one plunger Will be depressed for initiallyoiziening tlie valve to a slight extent so that air will pass lrointlie'inlet throught-lie 4bore 31 into 'bo'tli outletsA so that thecleaning` action Willloe accomplish ed. As tlie movement is continuedthe Avalreep'. 26 is opened farther Wliilertli'e plungergQQ'passesinto'tlie lower portion of Vthe bore Sl'fr cutting'y off the airv supplyto the cleaners. Lluis detailed action is ive'll disclosed in Patent No.1,409,538. p

All tlie abovedescribed structure i s.dis

closed in the Vprior patents mentioned and nol novelty is claimedtherefor tlioughvtlie Vparts are described and illustrated in ordertofgive a Vclear explanation of the present invention `Wliiclu.consistsin or comprises the provision of pipe 8'? connecting'tlie pipes 14 andl5 aendliavi'ug interposed therein a cliecl; valve 3S. kA similar pipebridges or connect-s'tliepipes 518' and19 and has interposed vthereina'r's'imilar ycheckjvalvet), tli'e exact location ofthe ypipes van'dfthefparltcular typeo'r", valves being immaterial.

Viith Vthis "arrangement it villobe'seen "that l 4v\ rlieii"tl'ieyoperating Ahandle'1314 4is 'pulled backf- Wardly air yil'l 'passintofa'n'd tlirouglitn'e 15 and' 18 -toft'lie s'anders 'and cleaners,

trio gli' only momentarily through y'tice latter.

Tli'e Check valves 38 and 40 Will'pr lnttlfre air froinpassing throughthe pipes ian'd 39 A- and 'it `Will V'be observed that i a conse'- fdu'enceonly the forward sandf'trap 4; jat' "e ch side ot the` locomotivewill oe operate and @and diseliargedrfonlyin dvance of the ti-rst "dByp'u ngftlreiliandleffoi respect.

vtr opposte direction; tlievalve Y members in tluiotlcer section oftliefvalve structure will be'operated 'so vthat air Will ers 'as Well asthe rear 'ones so that sand will fi? be discharged in advance -of tvvosets or Vd-riv- Y ers. eng-incerto control the sanding actioninaccordlance lWi'tlitli'e needs which lmay enistlunder di'ierentcircumstances. direction of opening ot 'tliercheck .valves may Obviouslythe f it is 'therefore a simple matter for the l be reversed as there isno Alimitation injth'isV `ilromthe foregoing description anda study ofthe .dravvings'if fWll Abe :seen'tlrat l Vnave thusprovided anextremel'ysiniplearf, rangement 'for tire purpose specified and `one `in whichinstallation may Wien" ur involving 'any iinat'e'rial lchanges 'inwexisting apparatus. consumption of sandland Will alsoavoid u nnecessaryuse or compressed air so 'that the pressure of the supply Will uotbeV,needlessly reduced. A l

lvxllnlel have shown and described the 1n-L ven'tion asappliedto acertain sanding'sys tem involving` a particular type of control 'illed'e'vice yvill'ecjonomize in the t valve'means it sliould'be understoodthat this disclosure is'merely illustrative as the right is reserved to.make variousjclia-nges in ythe construction andy arrangement kot parts'as Willradapt the invention'for use in connection'J Witliotlierapparatus or mechanisms, provided the variations and modilicationsconstitute no .departure from the yspirit oit the invention or 'thescope or"v the claimsliereunto appended. Y j p f iHaving tlius describedthe invention, l c aim:

1. Ina locomotive sanding mechanism 1n,-Y cludmg axsand dome, a'plurality'of set-'s 'oisand traps connected' with the dome and havingrespective,discharge pipes leadingv to k,different.sets of drivers,fluid'pressure'conducting 'pipes connected with tneresp'ective outtraps, control valves `for. tnerespeo. tive pipes locatedvithiln thecab', l and 'a' single lcontrol .means forthe valves for admittmg fluidpressure selectively tojone or il the sets of pipes.

*pairs otdrivers, fluidV pressure y.conducting pipesl leading to therespectivesets yof traps,

'contrlolvalves `interposed ibetween'fa Jsource of 'teile-m SSH:conducting"pires-ali@sleek t waived 2. In fa vlocomotive sandingapparatus in llt tions between said fluid'pressure conducting pipes. y Yz 3. In a loconiotivesanding mechanism including a sand dome, sets ofsand traps connected therewith and havingsrespective discharge pipesleading to dierent pairs off drivers,'fluid pressure conducting pipesconnected with Ythe traps, a source of fluid pressure supply,selectively operable control valves interposed between the sourceofsupply and the fluid pressure conducting pipes,

the combination with said fluid pressure ation'of the other valve willpermit fluid pressure to pass yinto a plurality for selec-.- tivelysanding one or more.V pairs of drivers.

4'. Ina locomotive sanding mechanism in# conducting pipes, of pipesconnecting the.

. saine and having check-valves interposed therein, whereupon actuationof one valve willpermit fluid pressure to pass to one set.

of fluid pressure conducting pipes and oper.

cluding a sand dome, sets of sand traps connectedv therewith and havingrespective dis- 4charge pipes leading to different pairs of drivers,fluid pressure conducting pipes connected with the traps, a source offluid pressure supply, selectively operable control valves interposedbetweenthe source of supf ply and thefluid pressure conducting pipes,

the sand traps having cleaning means, and` cleaning pipes leading' VfromVsaid valves, to the cleaning means, checkv valved pipes 0011-' nectingsaid fluid pressure conducting pipes,v

a selected valve fluid pressuremay be adkand other check valved pipesconnecting` said cleaner pipes, whereby upon operating-v inittedselectively to the fluid pressure rconducting pipes and. cleaning pipesof one set Y of traps or toa plurality thereof. p

5. Y In a locomotive sanding mechanism *in* vr cludinga sand dome,apluralityl of-sets of sand traps connected with the dome and Y havingrespective discharge pipes leading to different l sets of drivers,fluid` pressure: con- 1 yducting pipes and cleaning pipes connectedwith'the respective sets. of traps, and valveV means located the cab foradmitting :fluid pressure selectively to one'set of'fluid pres-A Acleaning pipes or to all thereof.

6. In. a locomotive sanding apparatus insure conducting lpipes land*corresponding cluding a sand dome, a 'plurality of sets of l sand trapsvconnected therewith, discharge pipes leading Vfrom the sand traps, thepipes Y from the different sets leading to differentV fluid vpressureconducting Y pipes leadingto the respective setsof traps,

pairs of drivers,

control valves interposed between a source of fluid pressure supply andsaid fluid pres- Y' sure conducting pipes, and means connecting` whereofI aflix signature. I

Y V,WiLLIAM HfwHiTn.- i

